Changed validity checks to use hashes for speed. Also changed them to onlyrun on the drivers in the source file of the current game, rather than on allgames, in non-debug builds. And fixed the coinage sorting check so that itdoesn't depend on the linker to order the strings in a particular way.[Paul Priest]

Removed -skip_validitychecks option now that the time to execute the checksis not as bad. [Aaron Giles]

Improved speed in Top Gunner by pre-decoding the vector processor microcode.Also added a shift register to produce the LCD-like look of the score andother numbers. [Mathis Rosenhauer]